U3500BM Ver la hoja de datos (PDF) - Temic Semiconductors

Número de pieza

componentes Descripción

Lista de partido

U3500BM

Cordless Telephone Signal Processor

Temic Semiconductors 

Content of Internal Registers

The registers have the following structure:

D7

D6

D5

D4

D3

RO: Reference for D/A converter

MUXDA DA6

DA5

DA4

DA3

MUXDA: D/A multiplexing

DA(6:0): Reference voltage D/A

R1: Gain adjustment RECLF

GEA3

GEA2

GEA1

GEA0

GEA(3:0): Gain earpiece amplifier (see also R5)

GRX(3:0): Gain adjustment RX

GRX3

R2: Gain adjustment TRANLF

G2TX3

G2TX2

G2TX1

G2TXO

G2TX(3:0): Gain adjustment TX after limiter

G1TX(3:0): Gain adjustment TX

G1TX3

R3: Enable functions receive

GDEM

EDDE

EEA

ERXO

GDEM:

EDDE:

EEA:

ERXO:

ERXHF:

ELNA:

ERX(l:0):

Gain demodulator

Enable deemphasis (disables bypass)

Enable earpiece amplifier

Enable RXO output

Enable mixer and IF amplifier

Enable low-noise amplifier

Enable parts of RXLF

ERX1

R4: Enable functions transmit

SSCCK

RBAT

BCOMP

BSCR

SSCCK:

RBAT:

BCOMP:

BSCR:

GMIC:

ETDM:

EPREE:

ETX:

Shift SC-clock (chifts SC-clock by 17/16)

Battery detection high/low range

Bypass compressor and expander

Bypass scrambler and descrambler

Gain of microphone preamplifier

Enable transmit data management

Enable preemphasis (disables bypass)

Enable TX low frequency part

GMIC

R5:

free

GEA4:

EXTLO:

free

free

free

free

Gain earpiece amplifier MSB (see also R1)

Select input mixer

R6 – R15: reserved for U3550BM

U3500BM

D2

D1

D0

DA2

DA1

DA0

GRX2

GRX1

GRX0

G1TX2

G1TX1

G1TX0

ERXHF ELNA

ERX2

ETDM

EPREE

ETX

free

GEA4

EXTLO

Rev. A3, 20-May-98

Preliminary Information

13 (17)

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